I am trying to learn how to transfer routes/waypoints from S&T to GPSU to my 276C. I can do the S&T to GPSU just fine, highlight the route and waypoints ok, but I can't get them to show up on the 276C when I click the upload to device icon. Some guidance would be appreciated...I need to get good at this before 8/24.Thanks for your help,Bill RauschenbergRadar